Feedeick meetsheimee



(N0 Model.)

P. MERTSH'EIMER.

I DRAFT PIPE FOR STEAM BOILER FURNACES. N0. 286.625. Patented Oct: 16, 1883. r

WWW

Md v a? UNITED STATES PATENT Orrros.

FREDRIOIC MERTSHEIMER, OF DENVER, COLORADO.

DRAFT-PlPE FOR STEAM-BOILER FURNACES.

SPECIFICATION forming part of Letters Retent No. 286,625, dated October 16, 1883,

Application filed May 29, 1883. (No model.)

To all whom it may concern I Be it known that I, FREDRIOK MERTsHmM- ER, of Denver, in the county of Arapa'hoe and State of Colorado, have invented certain Improvements in Draft-Pipes for Steam-Boiler Furnaces, of which the following is a specification.

My invention has reference to what are commonly known in the art as draft-pipes, which are located in the smoke-boxes of loco motives to receive the blast from the exhaustnozzles. i

The invention relates to an improved manner of supporting or sustaining the draft tubes, so that they may be conveniently raised or lowered from the exterior, as occasion may require, without the necessity of opening the smoke-box door. A

To this end it consists, essentially, in combining with the draft-pipe a suspending arm or arms extended thence upward through the top of the smoke-box, and combined with exterior fastening devices, such as hereinafter described.

Referring to the accompanying drawings, Figure 1 represents a sideelevation of the forward ends of a boiler and its smoke-box with my improvements applied thereto, one side of the smokebox being broken away to expose the parts located therein. cal section through the same on the line as w.

A represents the shell or body of the smokebox; B, the smoke-stack; O, the exhaust tubes or nozzles; and D, the drait-pipe, located be tween the nozzles and the stack in position to receive the blast of exhauststeam. The foregoing parts, as represented, are of substantially the ordinary construction, and constitute no part of my invention.

In applying my improvement, I secure firmly to the draft-pipe D, on opposite sides, two arms, E, extending outwardtherefrom. The outer ends of these arms I secure to the lower ends of two rods or pendants, F, which are extended upward through the top ofthe smokebox to the outside in such manner that their outer protruding ends may be grasped by the attendant in order to raise or lower the draftpipe, as may be required. For the purpose of fastening the pendent rods so as to maintion.

Fig. 2 is a verti tain the draft-pipe at the required height,

each plate being provided with a set-screw,

l, which may be turned inward firmly against the rod, in order to secure it firmly in posi Each rod is preferably provided, as shown, with a series of notches or indentations to receive the end of the set-screw, whereby the rod is maintained the more socurely in position; but these notches are not a necessary feature. The upper ends of the rods F are preferably provided with or fashioned into handles or hand-pieces, as shown, in order that they may be more readily adjusted; but this feature is also of minor importance, and the form of the handles may be modified, or they may be dispensed with, if preferred. The connection of the arms E to the lower ends of the rods 1 may also be modified. It is preferred, however, to provide each rod with a threaded neck, and to insert the same through a perforation in the arm from ends of the rods, may raise and lower the blastpipe, as required, afterward fastening the same by again tightening the screws, and this without the necessity of opening the smoke-box.

I am aware that a draft-tube has been adjusted by a system of levers and rods, and to such construction I lay no claim.

My device is exceedingly simple and cheap in construction, and is advantageous, in that it admits of the tube being securely and permanently fastened at the desired height, and also in that it is applicable to existing boilers with out difficulty.

What I claim as my invention is Y 1. In combination with the smokebox and draft-pipe of a boiler, the draft-tube, the rods F, attached thereto and extended upward through the smoke-box, with handles upon their upper ends, the bearingplates G, and the set-screws I.

2. The combination, with the smoke-box, of I00 the draft-pipe therein, the rods 13, attached to combined with external devices, substantially said pipe and extended upward through the as described, for securing and adjusting the 10 top of the sn10ke-b0x, and external fastening same. devices e substantiall as described actin to 5 hold the upper ends of the rods. 7 b FREDRIOK MERTSHEIMER' 3. In a steam-boiler, a blast-tube suspended WVitnesses: by rods, the upper ends of which are extended A. A. EGBERT, upward through the top of the smoke-box and H. E. FLAVIN. 

